Brake-band lining and method of making such lining



March 10, 1925. 1,529,373

L. E. PoPPE BRAKE 'BAD LINING AAND IETHOD 0F-IKING SUGH LINIKG med nb.'1e. 192s I Qcrnardv E- Puppe v Patented Mar. 10, 1925.

LEONARD E. P'OPFE, OF FALL RIVER', WISCONSIN.

BRAKE-BAND LINING- AND METHOD OF MAKING SUCH LINING.

Application filed February 16, 1923. Serial No. 619,405.

T 0 all 707mmy t may concern Be it known that I, LEONARD E. Porre, acitizen of the United States, and resident of Fall River, in the countyof Columbia and State of Wisconsin, have invented certain new and usefulImprovements in Brake-Band Linings and Methods of Making Such Linings;and I do hereby declare that the following is a full, clear, and exactdescription thereof.

' This invention relates to brake band linings or transmission bandlinings and to a process of making such linings. l

In linings for brake bands, and for similar bands such as thetransmission bands of certain types of automobiles employing planetarygearing, considerable difficulty has been encountered due primarily totwo main causes, namely, extremely rapid rate at which the lining wasworn away and the sloughing off or breaking off of portions of thelining with the corresponding clogging of the associated mechanism.These defects,

n therefore, not only interfered with the smooth operation of the brakeor equivalent mechanism, but interfered with the efficient operation ofthe associated mechanism as well. A further source of trouble has beenthe clogging up of the bands and lining adjacent the split portion oropening p0rtion of the band. At this point the worn portions of the bandand the relatively quiet or stagnant oil clog and seriously interferewith the operation of the brake band or equivalent device.

This invention is designed to overcome the above noted defects, andobjects of such invention are, therefore, to provide a lining for abrake band which will not Slough off or break off, which has anextremely long life, which'will not gum up and accumulate trash, driedoil and other material, and which will provide the smooth, evenoperation so much desired in this type of mechanism.

Further objects are to provide a process by which a lining for brakebands, transmission bands and similar devices may be readily and cheaplyproduced, and to provide a process which will employ relatively cheapmaterial and render such material eminently suitable for the purposeintended.

An embodiment of the invention is shown in the accompanying drawings, inwhich-- Figure l is a sectional view through a brake band or atransmission band.

Figure 2 is a transverse sectional view on a line .2-2 of Figure l.

Figure 3 is a perspective view of the finished lining strip as itappears when detached from the band.

In the following description, and Vin the claims, the term cbrake bandwill be employed to avoid needless enumerations, but it is intended thatsuch term shall include transmission bands, brake bands and othersimilar devices.

.Referring more particularly to the drawings, it will be seen that thebrake band comprises a resilient flexible metallic band l which is splitand provided with reinforcing portions terminating in juxtaposed lugs 2.

This band is lined with a wooden lining 3, which is provided withinwardly bevelled ends 4f adjacent the split portion of the band. It isheld in place by means of rivets whose heads 5 are preferablyposit-ionedupon the outer side of the band and whose spread or flattenedends 6 are located within recesses below thev inner surfacev of thelining. These rivets may be Y forced through the lining, if desired, orsuitable apertures 7 (see Figure 3) may be provided for their reception.

The lining 3, as stated, is composed of wood and is extremely flexibleand is oil impregnated.

In practicing the process contemplated by this invention, wood havinguniform elongated grain structure is employed. One of the varieties ofwood found eminently suitable for this use is elm. This wood ispreferably taken in the form of the veneer cylinder which is cut fromthe outer portion of a cylindrical piece of wood. The wood is cut intolengths, as indicated in Figure 3, of the required thickness and theends bevelled, as indicated at 4. If desired, holes 7 may be drilled forthe reception of the securing means. This wood may be steamed to renderit more pliant, if desired. It is, however, thoroughly boiled in oil soas to expel the moisture and to render the wood shall beso'ld tof thevpurchasers.

Waterproof and extremely flexible and tough. It is found that duringthis boiling process the oil thoroughly penetrates all portions 'of thestrips and nijaterially\.alters the`r original characteristics of theWood.

After the strips have been boiled, they are removed and allowedto dry.-IIt is.to

be noted, however, that they retain a largev percentage of `oiland`maintain their flexi-` bility. It is, of course, understood that Woodwith the grain ruiming lengthwisev of thestrip and free from knots andother blemishes-iseinployedy It is intended that these strips shall besold as a separate article; -fo'rinstance, they may be Vsuppliedinpaelrages vcontaining any desirednumber .and :retailed `through-jobbers. It is also intendedfth'at linished bands Asflpreviouslystated, the.rive.tsor other securing means maybe passed through therapertures inthe lining. y'l-lovvever, when the lining has been producedinthe manner described, fit is found-,that the rivetsrcan be readilyforced through fsuchlining Without providinga'ny holes therefor-'andWithout any danger of splitting the lining. L v

-It :Will'thus be seen that a brake` band lining `has been vprovidedWhich'has an eX- tremely long 1lii'e,: Whichhas an even and smoothaction Iand Which' Will not Slough Y'oil'. V*llt Will further ybe seenthat the'brake band Will not clog up.

' It Willy also .begseenv that "an .extremely simple andlellicaciousprocesszh-aslbeen provided by `which brake -band linings may be madein acheap-fand rapid manner.

: In an actual test conducted, the )brake band lining has beenfound topossess all of vthe abovenoted.characteristics; in fact,

after 4continuous use fduring,-faf.-.period 'of about si-'X months, noevidence of Wear could bedetected. g

Although' the inve 1tion kbeen kdescribed in considerable detail, it isto be understood that the detailed. disclosure is to be interpreted asillustrative rather than limiting, VIAand ythat the invention is to belimited only as claimed. f

I claim:

t :1., A, brake band comprising a split ieXible ring', a lining locatedWithin the ring and havingfinwardly bevelledendsadjacent the splitportion of said ring, and a'pluk rality of, fastenerstjoining saidlining and ring, said lining comprising an elongated oil-impregnatedstrip of vvood With the grain running longitudinally thereof.

;- 2.; A liningforl a brake band. comprising .anfelongated strip ofoil-impregnated-wood ...g5,LA brake band comprising avsplit flexiblering,l an oil impregnated Wood lining having the grain .runninglengthwise,said

strip having the moisture removed thereA from, andra series of headedrivets v extending through the ring; yand through the lining .Withtheheads located o n@the outer lsideof said ring, YSaid rivets having Splitillllsl @MS :positioned below" the inner surface of Ysaid lining@ 1 i. fVIn testimony that I claim the K4foregoing ,I have hereunto'set my handat Fall v River, in the `,county of Columbia, and State of Wisconsin. t

Liann"D s. Poem.

lfor; a brake,band comprising

